STRCPY (3)
copy a string
SYNOPSIS
#include <string.h>
char *strcpy(char * dest , const char * src );
char *strncpy(char * dest , const char * src , size_t n );
DESCRIPTION
The strcpy() function copies the string pointed to be src
(including the terminating `\\0' character) to the array pointed to by
dest. The strings may not overlap, and the destination string
dest must be large enough to receive the copy.
The strncpy() function is similar, except that not more than
n bytes of src are copied. Thus, if there is no null byte
among the first n bytes of src, the result wil not be
null-terminated.
In the case where the length of
src
is less than that of
n ,
the remainder of
dest
will be padded with nulls.
RETURN VALUE
The strcpy() and strncpy() functions return a pointer to
the destination string dest.
BUGS
If the destination string of a strcpy() is not large enough
(that is, if the programmer was stupid/lazy, and failed to check
the size before copying) then anything might happen.
Overflowing fixed length strings is a favourite cracker technique.
CONFORMING TO
SVID 3, POSIX, BSD 4.3, ISO 9899
SEE ALSO
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